Earlier quoted context omitted.
> The optimal altitude flown would be lower for shorter trips Where does the column of flying cars go? Do they expand vertically or horizontally as traffic increases? In the underpopulated area's of the US where 10% of the population lives this is a feasible mode of transit, what about the 90% that actually have traffic? If the cars broaden vertically it's a safety risk, if the cars broaden horizontally it's a violat…
> If the cars broaden vertically it's a safety risk, That's the evidence you're giving to dismiss the ability of flying cars to distribute over multiple altitude? Once we've accepted the hypothetical that technology allows for a single car to fly from A to B safely (which is almost certainly automated), it seems clear that having cars move at different altitude will be trivially possible. > Also, with the advent of K…
In real world we can't accept this because there are always unpredictable factors, we can only say that probability of a safe flight in a single car is say 99.999%. Then if there are 20 cars one right above another, then probability that none of them crash is only 99.98%, and it could damage all cars below it, so the resulting probability of safe flight in a car reduces to something of order 99.99% instead of 99.999% for a single car. And 99.99% is really not safe enough for everyday flying during many years.